'Strength' in the Bible

Then Jehu took his bow in his hand, and with all his strength sent an arrow, wounding Joram between the arms; and the arrow came out at his heart, and he went down on his face in his carriage.

You say you have a design, and strength for war, but these are only words. Now to whom are you looking for support, that you have gone against my authority?

And they said to him, Hezekiah says, This day is a day of trouble and punishment and shame; for the children are ready to come to birth, but there is no strength to give birth to them.